Ionic formulas determine the chemical formula for each of the following ionic compounds:

a. strontium nitrate, an ingredient in some fireworks, signal flares, and matches
b. sodium cyanide, a compound used in electroplating and treating metals
c. chromium(iii) hydroxide, a compound used to tan and dye substances

a) Strontium nitrate - Sr(NO3)2

b) Sodium cyanide - NaCN

c) chromium(III) hydroxide - Cr(OH)3

Explanation:

strontium nitrate, an ingredient in some fireworks, signal flares, and matches

b. sodium cyanide, a compound used in electroplating and treating metals

c. chromium(III) hydroxide, a compound used to tan and dye substances

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.